三轴高精度磁阻磁强计的设计  

Design of High Precision Three Axis Magnetoresistive Magnetometer

作　　者：朱立超 罗志会 潘礼庆[2,3] ZHU Li-chao;LUO Zhi-hui;PAN Li-qing(College of Electrical Engineering ＆ New Energy,China Three Gorges University,Yichang 443002,China;HubeiProvincial Research Center on Weak Magnetic-field Detection Engineering Technology,China Three Gorges University,Yichang 443002,China;College of Science,China Three Gorges University,Yichang 443002,China)

机构地区：[1]三峡大学电气与新能源学院,湖北宜昌443002 [2]湖北省弱磁探测工程技术研究中心,湖北宜昌443002 [3]三峡大学理学院,湖北宜昌443002

出　　处：《仪表技术与传感器》2018年第7期29-32,共4页Instrument Technique and Sensor

基　　金：湖北省科技支撑技术项目(2014BEC060)

摘　　要：针对隧道磁电阻传感器存在噪声过大的不足,采用锁相放大技术,对隧道磁电阻传感器输出信号的噪声进行抑制,设计了弱磁信号调理板和24位高精度模数转换板,并开发了基于Lab VIEW的多功能可视化系统软件。通过实验测试,该磁阻磁强计的探测精度可以达到亚n T级。Based on the TMR sensor＇noise has considerable defects,Using lock-in amplifier technology,the noise of the output signal of the tunnel magneto resistance sensor is suppressed,designed signal conditioning circuit of the weak magnetic field and 24 bit high-precision analog to digital conversion circuit,and develop multiple-function visual system software based on LabVIEW.Through testing experiment,the detection accuracy of the magnetoresistive magnetometer can reach sub n T level.

关 键 词：隧道磁电阻传感器 弱磁场检测 锁相放大 可视化系统 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]